Mercedes-AMG Petronas Motorsport, the reigning World Constructors’ Champions based in Brackley, England, is passionate about the Spies Hecker paint used on its race cars and team trucks.

“ It's important that the race cars look great on the track and that our sponsors’ logos are displayed clearly. But what is exceptionally critical for us are the weight of the paint, the speed of its application and the ability of the entire paint system to be used over and over again, all season, season after season, with the same great results.

Spies Hecker delivers that for us. ” Andrew Moody,
Head of Paint and Graphics at MERCEDES AMG PETRONAS

Situated in Brackley, England, about 70 miles northwest of London, Mercedes-AMG Petronas Motorsportoccupies a 60,000m2 site with about 850 employees working five shifts, 24-hours a day, seven days a week. The team’s ultra-modern facilities include a wind tunnel, driver simulator and its own paint shop.

Being less than 10 miles from the Silverstone race circuit might seem the key factor for the team’s location, but Andrew Moody explains the site has other advantages. “We are in the centre of the so-called UK motorsports valley, which means we have many specialist suppliers within a 50-mile radius,” he says.

And one of those suppliers is Spies Hecker.

“ We have a long-standing relationship with Andrew Moody and his team so we understand thw pressure they are under, and in turn the requirements that our products perform, day after day, season after season. We're very proud that we can deliver the results they need, so that the team can deliver on the track. ” Joachim Hinz,
Spies Hecker Brand Manager, Europe, Middle East and Africa

When being painted, each part requires a huge amount of attention to detail, particularly relating to its weight, and the aerodynamically-sensitive parts require even more detailed finishing.

The substrates of the race car also vary depending on whether they are of a structural or of a cosmetic nature, and this impacts how the part is painted and its bake cycle. But regardless of the part or of the substrate, two things always hold true.

Work to smooth

Work to smooth.

Weight. Aerodynamics. Speed.

This season – which sees 21 Grands Prix over eight months - the W07 car, in addition to new external body parts and wings, is sporting a new design in the instantly-recognisable colours from 2015.

On the 2016 race car there are eight colours, none of which are commercially available: three shades of green and five shades of the main colour, called Stirling Silver after Stirling Moss, who drove for Mercedes in 1955.

“ For us everything is about weight and aerodynamics. Carbon fibre, for example, can be tricky, as it can be porous. So we have to get a lovely finish with the minimum weight of paint, and the acceptable tolerances are different from component to component. For an aerodynamic part, it might be 0.3mm, which would be miniscule for most refinishers, but for us, any more can cause real issues. That can be hard to determine visually in the spray booth, so we have a “work to smooth” rule. ” Andrew Moody,
Head of Paint and Graphics at MERCEDES AMG PETRONAS

The race car livery means that it is essential that every interchangeable component not only fits perfectly but also matches the colours and shading on the adjacent panels.

Smooth car concept.

Smooth car concept.

To ensure the race cars remain as aerodynamically sound as possible, 80% of the sponsors’ logos are airbrushed onto the paint rather than using decals. And that includes the iconic Mercedes star on the front of the nose.

“ Airbrushing the star is a fantastically creative skill, but we needed repeatability, consistency and accuracy. So we took that wonderfully creative activity and build a clear process behind it, so any of our painters can airbrush it. The star takes nearly an hour to complete, and there are 30 different stages in the process, but only four colours: blue, brown, white and black. ” Andrew Moody,
Head of Paint and Graphics at MERCEDES AMG PETRONAS

Work doesn't stop after the race.

Work doesn't stop after the race.

After every race, the Build Department strips the cars and then the individual parts are sent to Moody’s team in the paint shop. The parts are checked carefully and then usually repainted.

It may seem rather excessive to refinish the entire car after every race, but as Moody explains, there are valid reasons for it. “Consider qualifying or racing somewhere like Abu Dhabi or Bahrain, where there is a lot of sand in the air.

“ If a piece of gravel hits our car, it can take a piece out of the body, or can cause craters and nicks in the paint, which certainly will interfere with our aerodynamics, especially if the damage is on the front wing. It goes back to how aerodynamically important it is to “work to smooth”, and that means even after a race. ” Andrew Moody,
Head of Paint and Graphics at MERCEDES AMG PETRONAS

A part that requires refinishing is first weighed, then stripped of its coatings, repainted, weighed again, inspected, and only then is it returned to the Build Department.

The team keeps a detailed record of each part’s weight history until that part becomes unusable. This is to ensure a part doesn’t “gain” weight over the course of its life. Some parts may be a tiny bit heavier after their first paint and will be slighter lighter after their second and subsequent repaints.

Most parts have a life span of four or five repaints, while some have shorter lifespans, often due to the substrate being very thin – perhaps only 1mil thick - or because the design might change.

Not just race cars.

Not just race cars.

Spies Hecker isn’t reserved for the race cars though. There are eight team trucks that are painted with Spies Hecker about every two years. And Moody’s team paints hundreds, if not thousands, of garage and hospitality boards, as well as everything from grid trollies and water bottles, to the engineer’s station on the pit wall.